alef 0.25.40

Opinionated polyglot binding generator for Rust libraries
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135

use super::*;
use crate::core::ir::{EnumDef, EnumVariant, FieldDef, TypeDef, TypeRef};

fn make_field(name: &str, ty: TypeRef, optional: bool) -> FieldDef {
    FieldDef {
        name: name.to_string(),
        ty,
        optional,
        default: None,
        doc: String::new(),
        sanitized: false,
        is_boxed: false,
        type_rust_path: None,
        cfg: None,
        typed_default: None,
        core_wrapper: crate::core::ir::CoreWrapper::None,
        vec_inner_core_wrapper: crate::core::ir::CoreWrapper::None,
        newtype_wrapper: None,
        serde_rename: None,
        serde_flatten: false,
        binding_excluded: false,
        binding_exclusion_reason: None,
        original_type: None,
    }
}

fn make_typedef(name: &str, fields: Vec<FieldDef>) -> TypeDef {
    TypeDef {
        name: name.to_string(),
        rust_path: format!("test_lib::{name}"),
        original_rust_path: String::new(),
        fields,
        methods: vec![],
        is_opaque: false,
        is_clone: true,
        is_copy: false,
        is_trait: false,
        has_default: false,
        has_stripped_cfg_fields: false,
        is_return_type: false,
        serde_rename_all: None,
        has_serde: false,
        super_traits: vec![],
        doc: String::new(),
        cfg: None,
        binding_excluded: false,
        binding_exclusion_reason: None,
        is_variant_wrapper: false,
        has_lifetime_params: false,
        version: Default::default(),
    }
}

#[test]
fn gen_enum_unit_variants_emit_ruby_symbols() {
    let enum_def = EnumDef {
        name: "Status".to_string(),
        rust_path: "test_lib::Status".to_string(),
        original_rust_path: String::new(),
        variants: vec![
            EnumVariant {
                name: "Pending".to_string(),
                fields: vec![],
                doc: String::new(),
                is_default: false,
                serde_rename: None,
                binding_excluded: false,
                binding_exclusion_reason: None,
                is_tuple: false,
                originally_had_data_fields: false,
                cfg: None,
                version: Default::default(),
            },
            EnumVariant {
                name: "Done".to_string(),
                fields: vec![],
                doc: String::new(),
                is_default: false,
                serde_rename: None,
                binding_excluded: false,
                binding_exclusion_reason: None,
                is_tuple: false,
                originally_had_data_fields: false,
                cfg: None,
                version: Default::default(),
            },
        ],
        methods: vec![],
        doc: String::new(),
        cfg: None,
        is_copy: false,
        has_serde: false,
        serde_tag: None,
        serde_untagged: false,
        serde_rename_all: None,
        binding_excluded: false,
        binding_exclusion_reason: None,
        excluded_variants: vec![],
        version: Default::default(),
    };
    let code = gen_enum(&enum_def);
    assert!(code.contains("enum Status"), "must emit enum definition");
    assert!(code.contains("to_symbol"), "unit enums use Ruby symbols");
    assert!(code.contains("\"pending\""), "variant snake_case symbol key");
}

#[test]
fn gen_struct_emits_magnus_wrap_attribute() {
    let typ = make_typedef("Config", vec![make_field("value", TypeRef::String, false)]);
    let mapper = crate::backends::magnus::type_map::MagnusMapper;
    let api = crate::core::ir::ApiSurface {
        crate_name: "test_lib".to_string(),
        version: "0.1.0".to_string(),
        types: vec![],
        functions: vec![],
        enums: vec![],
        errors: vec![],
        excluded_type_paths: ::std::collections::HashMap::new(),
        excluded_trait_names: ::std::collections::HashSet::new(),
        services: vec![],
        handler_contracts: vec![],
        unsupported_public_items: Vec::new(),
    };
    let code = gen_struct(&typ, &mapper, "TestLib", &api, false, &[]);
    assert!(code.contains("magnus::wrap"), "struct must have magnus::wrap");
    assert!(code.contains("struct Config"), "must emit struct Config");
}

#[test]
fn gen_opaque_struct_emits_arc_inner() {
    let typ = make_typedef("Handle", vec![]);
    let code = gen_opaque_struct(&typ, "test_lib", "TestLib");
    assert!(code.contains("inner: Arc<"), "opaque struct must have Arc inner");
    assert!(code.contains("struct Handle"), "must emit struct Handle");
}